Introduction and selection of VSSJA-1 monoflange expansion joint

Introduction and selection of VSSJA-1 monoflange expansion joint
VSSJA-1 single flange expander can prevent the pipeline from leakage or damage of the compensation joint due to excessive displacement, mainly used for the loose connection of pipeline that absorbs axial displacement and withstands pressure thrust within the allowable displacement range. It is suitable for connecting with flange on one side and welding with pipeline on the other side. When installing, adjust the installation length of both ends of the product and pipeline or flange, tighten the gland bolts diagonally and evenly in turn, and then adjust the limit nuts, so that the pipeline can be freely expanded within the expansion range and lock the expansion volume to ensure the normal operation of the pipeline.
VSSJA-1 monoflanged telescope classification: double flange and monoflanged limit telescope.
Flange pressure commonly used are PN0.6MPa, PN1.0MPa, PN1.6MPa, PN2.5MPa.
Flange standards include national standard, American standard, German standard, Japanese standard, etc.
The role of flange is to connect with bolts, different pressure has different connection size, different standard has different connection size.
VSSJA-1 monoflanged expander installation matters:
First, the location of the pipeline installation expansion joint pier: the pier can bear the weight of the pipeline and the weight of the expansion joint, equivalent to the bridge pier, the pipeline can be continuously supported on the pier can make the position of the pipeline and expansion joint connection move freely.
Second, the location of the pier selection: spacing 6 ~ 12m, D is particularly large, L take 3m.
Third, the pier spacing is small → M, Q (bending moment and shear force) is small → pier cost is high. Pier type is divided into support ring type, saddle type, sliding type. Piers can effectively prevent large open installation pipeline and expansion joint by natural temperature changes under thermal expansion and contraction can be freely displaced without damage.